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Diss Factsheets

Physical & Chemical properties

Density

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24/04/2008-19/09/2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted in compliance with GLP and agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of relevant results.
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Date of Signature: 15/10/2007; Date of Inspection: 21/08/2007
Type of method:
air comparison pycnometer (for solids)
Type:
relative density
Density:
>= 1 110 - <= 1 130 kg/m³
Temp.:
19.8 °C

 Calibration

The pressure readings (P1and P2) and the calculated volume for the calibration ball are shown in the following table:

Determination

P1

P2

Volume (cm3)

Certified Volume (cm3)

Tolerance

(cm3)

A

17.159

8.497

56.506

56.6

± 0.5

B

17.053

8.445

56.516

56.6

± 0.5

Sample

The pressure readings, calculated volumes and density values obtained for the test material are shown in the following table:

Determination

P1

P2

Volume (cm3)

Density

(kg/m3)

A

17.318

7.329

25.261

1.11 x 103

B

17.109

7.314

27.420

1.13 x 103

Temperature:               19.8 ± 0.5ºC
Mean density:              1.12 x 103 kg/m3
Relative density:           1.12

Conclusions:
The relative density of the test material has been determined to be 1.12 at 19.8 +/- 0.5 deg C.
Executive summary:

The relative density of the test material was determined using a gas comparison pycnometer, Method A3 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC). The relative density of the test material has been determined to be 1.12 at 19.8 +/- 0.5 deg C.

Description of key information

Relative density 1.12 at 19.8 ± 0.5 °C, EU Method A.3, Butler & White (2008)

Key value for chemical safety assessment

Relative density at 20C:
1.12

Additional information

The relative density of the test material was determined in the key study (Butler & White 2008) in a study performed in accordance with EU Method A.3, under GLP conditions. The study was performed using the air compression pycnometer method (for solids). The study was assigned a reliability score of 1 in accordance with the principles for assessing data quality as defined in Klimisch et al. (1997).

Under the conditions of the test, the relative density of the test material was determined to be 1.12 at 19.8 °C ± 0.5 °C.